CN108050184A - A kind of preparation method of wear-resisting type friction material - Google Patents
A kind of preparation method of wear-resisting type friction material Download PDFInfo
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- CN108050184A CN108050184A CN201711362826.2A CN201711362826A CN108050184A CN 108050184 A CN108050184 A CN 108050184A CN 201711362826 A CN201711362826 A CN 201711362826A CN 108050184 A CN108050184 A CN 108050184A
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- mixed
- friction material
- sisal fiber
- temperature
- wear
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- 239000002783 friction material Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 65
- 244000198134 Agave sisalana Species 0.000 claims abstract description 64
- 239000011812 mixed powder Substances 0.000 claims abstract description 31
- 239000004327 boric acid Substances 0.000 claims abstract description 20
- 229910021538 borax Inorganic materials 0.000 claims abstract description 14
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 14
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 14
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 13
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- 230000032050 esterification Effects 0.000 claims abstract description 10
- 238000005886 esterification reaction Methods 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 27
- 238000002156 mixing Methods 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 238000009835 boiling Methods 0.000 claims description 24
- 238000000855 fermentation Methods 0.000 claims description 24
- 230000004151 fermentation Effects 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 18
- 239000000376 reactant Substances 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 17
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 16
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000007654 immersion Methods 0.000 claims description 15
- -1 boric acid modified phenolic resin Chemical class 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000008188 pellet Substances 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 12
- 238000007873 sieving Methods 0.000 claims description 11
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 7
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 7
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 7
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 7
- 229940079827 sodium hydrogen sulfite Drugs 0.000 claims description 7
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 7
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 7
- 230000006837 decompression Effects 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000005453 pelletization Methods 0.000 claims description 6
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical class [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 6
- 235000019394 potassium persulphate Nutrition 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 235000011624 Agave sisalana Nutrition 0.000 claims description 5
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 239000008103 glucose Substances 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 150000008065 acid anhydrides Chemical class 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 239000001913 cellulose Substances 0.000 abstract description 6
- 229920002678 cellulose Polymers 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 239000005011 phenolic resin Substances 0.000 abstract description 3
- 229920001568 phenolic resin Polymers 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- PQMFVUNERGGBPG-UHFFFAOYSA-N (6-bromopyridin-2-yl)hydrazine Chemical compound NNC1=CC=CC(Br)=N1 PQMFVUNERGGBPG-UHFFFAOYSA-N 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 244000137852 Petrea volubilis Species 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002171 ethylene diamines Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 235000009754 Vitis X bourquina Nutrition 0.000 description 1
- 235000012333 Vitis X labruscana Nutrition 0.000 description 1
- 240000006365 Vitis vinifera Species 0.000 description 1
- 235000014787 Vitis vinifera Nutrition 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- LCDFWRDNEPDQBV-UHFFFAOYSA-N formaldehyde;phenol;urea Chemical compound O=C.NC(N)=O.OC1=CC=CC=C1 LCDFWRDNEPDQBV-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
- F16D2200/0065—Inorganic, e.g. non-asbestos mineral fibres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of preparation methods of wear-resisting type friction material, belong to friction material preparing technical field.Phenolic resin is modified first with boric acid,So as to promote the reduction of the loss amount of carbon in phenolic resin,Improve the heat resistance of friction material,Recycle aqueous slkali,Maleic anhydride and borax carry out surface modification to sisal fiber,The present invention is rich in OH groups due to the cellulose of sisal fiber,Carry out esterification,Improve the interfacial adhesion between sisal fiber and matrix,It is subsequently added into borax,When borax is thermally decomposed,Substantial amounts of heat can be absorbed,By CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide mixed grinding into mixed-powder,Mixed-powder is modified using silane coupling agent,Molybdenum disulfide is made to have higher chemism,Be conducive to the formation of lubrication friction film and the cladding to sisal fiber in friction process,In addition the main component of CONCHA MERETRICID SEU CYCLINAE is calcium carbonate,Make it that also there is high tenacity,Further improve the wearability of friction material,It is with a wide range of applications.
Description
Technical field
The invention discloses a kind of preparation methods of wear-resisting type friction material, belong to friction material preparing technical field.
Background technology
Friction material is a kind of component applied on dynamic power machine, braking and transmission agency are performed by rubbing action
Material.It mainly includes brake facing and clutch surface.For braking, clutch disc is used to be driven brake block.
Any mechanical equipment and the various vehicles of movement all must have braking or gearing.Friction material is this system
Critical piece on dynamic or transmission device.Its most important function is by rubbing to absorb or passing power.Such as clutch
Piece passing power, brake(-holder) block absorb kinetic energy.They enable mechanical equipment safely and reliably to work with various motor vehicles.So
It is that one kind is widely used and very crucially material to say friction material.
Friction material is a kind of macromolecule trielement composite material, is physics and chemical complex.It is bonded by macromolecule
Agent, reinforcing fiber and frictional property regulator three categories composition and other compounding agents are formed, and are made through a series of production and processings
Product.The characteristics of friction material is that have good coefficient of friction and abrasion resistance properties, at the same have certain heat resistance and
Mechanical strength can meet the performance requirement of the transmission and braking of vehicle or machinery.They are widely used in automobile, train, fly
On all kinds of engineering mechanical devices such as machine, oil-well rig.And the transmission or system of civil goods such as bicycle, washing machine etc. as power
It is dynamic to slow down with indispensable material.
Friction material is vehicle and the key safety par in the clutch assembly and brake of machinery, is being driven and is braking
In the process, following technology requirement should mainly be met：Suitable and stabilization coefficient of friction, good wearability have good machine
Tool intensity and physical property, brake noise be low, antithesis surface wear is smaller.
Start within 2004, developed rapidly with auto industry, people are higher and higher to braking ability requirement, start research and development ceramics
Type friction material.Ceramic type friction material is mainly mixed with inorfil and several organic fibers to be formed, no asbestos, no metal.
Therefore, inventing a kind of good friction material of abrasion resistance properties has friction material preparing technical field actively meaning
Justice.
The content of the invention
The technical problems to be solved by the invention：Exist for common friction material at present and wear no resistance and poor heat resistance,
The defects of can not meet the requirement of automobile brake sheet standard, provide a kind of preparation method of wear-resisting type friction material.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of preparation method of wear-resisting type friction material, it is characterised in that specifically preparation process is：
（1）Sisal fiber and sodium hydroxide solution are mixed and are placed in immersion machine, at room temperature immersion treatment, obtains impregnating sisal hemp
Fiber, then maleic anhydride, dimethylbenzene, borax and sodium hydrogensulfite are mixed and are placed in equipped with blender, thermometer and condenser pipe
It is stirred in four-hole boiling flask, adds in immersion sisal fiber after stirring into four-hole boiling flask again and be stirred at reflux, obtain esterification sisal fiber,
Esterification sisal fiber is washed with deionized, is finally placed in baking oven dry, discharging, obtains modified sisal fiber；
（2）Phenol, formalin and hydrogen peroxide are mixed to pour into the four-hole boiling flask equipped with blender, thermometer and condenser pipe and returned
Stream reaction, obtain reactant, after cooling, then into the four-hole boiling flask with reactant add in reactant quality 2% boron
Acid continues to keep the temperature back flow reaction, decompression dehydration, and discharging obtains boric acid modified phenolic resin；
（3）100 mesh sieves will be crossed after CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide mixed grinding, sieving mixed-powder is collected, by the mixed-powder that sieves
It is mixed with silane coupling agent KH-560, obtains mixture, continue to add in the glucose of mixture quality 7% into mixture
It with the dusty yeast of mixture quality 0.4%, is fitted into fermentation tank, is sealed by fermentation, after fermentation, take out tunning, as change
Property mixed-powder；
（4）It counts in parts by weight, weighs 30~40 parts of boric acid modified phenolic resin, 16~20 parts of modified sisal fibers and 6 respectively
~8 parts of modified mixed-powders mixing are placed in mixer and stir, then add 2~4 parts of potassium peroxydisulfates, 3~5 parts of rosin and 1~3 part
Ethylenediamine continues heat preservation and is mixed, obtains mixed material, mixed material is poured into extruding pelletization in double screw extruder, is obtained
To pellet, pellet is finally poured into hot-forming in hot press, cooling discharging, you can wear-resisting type friction material is made.
Step（1）The mass ratio for the sodium hydroxide solution that the sisal fiber and mass fraction is 20% is 1：5, it impregnates
Processing time is 2~4h, and maleic anhydride, dimethylbenzene, the mass ratio of borax and sodium hydrogensulfite are 2：1：2：1, mixing time is
10~12min is stirred at reflux temperature as 135~140 DEG C, is stirred at reflux the time as 1~3h, and washing times are 3~5 times, dry
Temperature is 75~85 DEG C, and drying time is 1~2h.
Step（2）The hydrogen peroxide that the formalin and mass fraction that the phenol, mass fraction are 10% are 15%
Mass ratio is 4：1：1, reaction temperature is 50~60 DEG C, and the reaction time is 16~20min, and the temperature that cools is 24~26 DEG C,
Continuation reflux time is 1~3h.
Step（3）The CONCHA MERETRICID SEU CYCLINAE and the mass ratio of molybdenum disulfide are 1：3, milling time is 8~10min, and sieving is mixed
The mass ratio for closing powder and silane coupling agent KH-560 is 3：1, the mixing time is 6~8min, and fermentation temperature is 35~40
DEG C, fermentation time is 8~10 days.
Step（4）The whipping temp is 45~65 DEG C, and mixing time is 20~30min, and it is 35 to continue mixing time
~45min, prilling temperature are 90~100 DEG C, and granulation rotating speed is 100~120r/min, and hot pressing temperature is 160~180 DEG C, hot pressing
Pressure is 6~8MPa.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention is modified sisal fiber and modified mixed-powder as reinforcing agent using boric acid modified phenolic resin as matrix, and
It is aided with potassium sulfate, rosin and ethylenediamine etc. and rub resistance wear pattern friction material is prepared, the present invention is first with boric acid to phenol
Urea formaldehyde is modified, and in the curing process, the phenolic hydroxyl group of phenol and the boron hydroxyl of boric acid chemically react, and form boric acid
Phenol ester structure, since the boric acid phenol ester structure using boron atom as core encloses part phenolic hydroxyl group so that based on phenolic hydroxyl group
Pyrolysis be not susceptible to, in addition boric acid phenol ester structure forms boron oxide in cracking process, reduces oxidation of coal
The formation of object is closed, so as to promote the reduction of the loss amount of carbon in phenolic resin, the heat resistance of friction material is improved, recycles alkali soluble
Liquid, maleic anhydride and borax carry out sisal fiber surface modification, and the wherein main component of sisal fiber is cellulose, first with
Aqueous slkali improves sisal fiber surface modification treatment, the modified crystallinity for promoting its cellulose, is conducive to sisal fiber
Mechanical property is improved, while the surface area of sisal fiber is increased, matrix and the adhesion area on sisal fiber surface
Increased, achieve the purpose that the boundary strength for improving matrix and sisal fiber, the wearability for being conducive to friction material is carried
It is high；
（2）The present invention introduces maleic anhydride thereto since the cellulose of sisal fiber is rich in-OH groups, is esterified
Reaction, maleic anhydride is grafted to sisal fiber surface so that sisal fiber surface carry double bond group, can by double bond with
Polymeric matrix reacts, and improves the interfacial adhesion between sisal fiber and matrix, is conducive to the wearability of friction material
It is improved with heat resistance, is subsequently added into borax, when borax is thermally decomposed, substantial amounts of heat can be absorbed, at the same it is fine in sisal hemp
Dimension table face forms glass state material, has separated contact of the oxygen with sisal fiber, cellulose macromolecule thermal oxide is delayed to decompose, together
When have the formation of network cross-linked object, make boron element effectively it is fixed on cellulose, improve the heat resistance of friction material again；
（3）The present invention by CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide mixed grinding into mixed-powder, using silane coupling agent to mixed-powder into
Row is modified, and by itself and glucose and dusty yeast co-fermentation, breakdown of glucose is made its tool into macromolecular carbohydrate using microorganism
Toughness, improves the caking property between mixed-powder and matrix, is effectively filled in intrinsic silicon hole, makes matrix more
It is closely knit, wherein molybdenum disulfide have with layer structure as graphite-like, and sulphur atom is negative divalent in molybdenum disulfide molecule, makes two
Molybdenum sulfide has higher chemism, promotes the combination of sisal fiber and matrix, forms the surface texture of dense uniform,
Be conducive to the formation of lubrication friction film and the cladding to sisal fiber in friction process, it is possible to reduce sisal fiber in wear process
Fracture and extract, improve the wearability of friction material, in addition the main component of CONCHA MERETRICID SEU CYCLINAE is calcium carbonate, since calcium carbonate is brilliant
The ordered arrangement and CONCHA MERETRICID SEU CYCLINAE of grain contain a small amount of protein, can effectively bond calcium carbonate, it is made not only to have high intensity,
Also there is high tenacity, be effectively filled in inside friction material, further improve the wearability of friction material, widely should have
Use prospect.
Specific embodiment
It is 1 in mass ratio：Sisal fiber and mass fraction are placed in immersion machine by 5 for 20% sodium hydroxide solution mixing
In, 2~4h of immersion treatment at room temperature obtains impregnating sisal fiber, then by maleic anhydride, dimethylbenzene, borax and bisulfite
Sodium is 2 in mass ratio：1：2：1 mixing be placed in the four-hole boiling flask equipped with blender, thermometer and condenser pipe stirring 10~
12min is added in again into four-hole boiling flask after stirring and is impregnated sisal fiber, and 1~3h is stirred at reflux in the case where temperature is 135~140 DEG C,
Obtain esterification sisal fiber, esterification sisal fiber 3~5 times be washed with deionized, is finally placed in baking oven, temperature for 75~
Dry 1~2h, discharging at 85 DEG C, obtain modified sisal fiber；It is 4 in mass ratio：1：Phenol, mass fraction are 10% by 1
The four-hole boiling flask equipped with blender, thermometer and condenser pipe is poured into formalin and the hydrogen peroxide mixing that mass fraction is 15%
In, it is 16~20min of back flow reaction at 50~60 DEG C in temperature, obtains reactant, cool to after 24~26 DEG C, then to band
There is the boric acid that reactant quality 2% is added in the four-hole boiling flask of reactant, continue to keep the temperature 1~3h of back flow reaction, decompression dehydration goes out
Material, obtains boric acid modified phenolic resin；It is 1 in mass ratio by CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide：Mistake after 3 8~10min of mixed grinding
100 mesh sieves collect sieving mixed-powder, are 3 in mass ratio by sieving mixed-powder and silane coupling agent KH-560：1 mixing is stirred
6~8min is mixed, obtains mixture, continues to add in the glucose of mixture quality 7% and mixture quality 0.4% into mixture
Dusty yeast is fitted into fermentation tank, is sealed by fermentation in the case where temperature is 35~40 DEG C 8~10 days, after fermentation, is taken out fermentation production
Object, as modified mixed-powder；Count in parts by weight, weigh respectively 30~40 parts of boric acid modified phenolic resin, 16~20 parts change
Property sisal fiber and 6~8 parts of modified mixed-powders mixing be placed in mixer, in the case where temperature is 45~65 DEG C stirring 20~
30min, then add 2~4 parts of potassium peroxydisulfates, 3~5 parts of rosin and 1~3 part of ethylenediamine, continue heat preservation be mixed 35~
45min obtains mixed material, and mixed material is poured into double screw extruder, temperature be 90~100 DEG C, rotating speed be 100~
Extruding pelletization under conditions of 120r/min obtains pellet, finally pours into pellet in hot press, temperature for 160~180 DEG C,
Pressure is hot-forming, cooling discharging under 6~8MPa, you can wear-resisting type friction material is made.
Example 1
It is 1 in mass ratio：5 are placed in sisal fiber and mass fraction in immersion machine for 20% sodium hydroxide solution mixing,
Immersion treatment 2h at room temperature is obtained impregnating sisal fiber, then maleic anhydride, dimethylbenzene, borax and sodium hydrogensulfite is pressed quality
Than for 2：1：2：1 mixing is placed in the four-hole boiling flask equipped with blender, thermometer and condenser pipe and stirs 10min, after stirring again to
Added in four-hole boiling flask and impregnate sisal fiber, in temperature to be stirred at reflux 1h at 135 DEG C, obtain esterification sisal fiber, spend from
Sub- water washing is esterified sisal fiber 3 times, is finally placed in baking oven, and dry 1h, discharging in the case where temperature is 75 DEG C obtain modified sisal hemp
Fiber；It is 4 in mass ratio：1：1 mixes the hydrogen peroxide that formalin and mass fraction that phenol, mass fraction are 10% are 15%
Conjunction is poured into the four-hole boiling flask equipped with blender, thermometer and condenser pipe, and the back flow reaction 16min in the case where temperature is 50 DEG C is obtained
Reactant cools to after 24 DEG C, then the boric acid of reactant quality 2% is added in into the four-hole boiling flask with reactant, after
The warm back flow reaction 1h of continuation of insurance, decompression dehydration, discharging obtain boric acid modified phenolic resin；CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide are pressed into quality
Than for 1：100 mesh sieves are crossed after 3 mixed grinding 8min, collect sieving mixed-powder, by sieving mixed-powder and silane coupling agent KH-
560 be 3 in mass ratio：1 is mixed 6min, obtains mixture, continues to add in the grape of mixture quality 7% into mixture
The dusty yeast of sugar and mixture quality 0.4%, is fitted into fermentation tank, and 8 days are sealed by fermentation at being 35 DEG C in temperature, after fermentation,
Tunning is taken out, as modified mixed-powder；Count in parts by weight, weigh respectively 30 parts of boric acid modified phenolic resin, 16 parts
Modified sisal fiber and 6 parts of modified mixed-powder mixing are placed in mixer, are stirred 20min in the case where temperature is 45 DEG C, then are added 2
Part potassium peroxydisulfate, 3 parts of rosin and 1 part of ethylenediamine continue heat preservation and 35min are mixed, obtain mixed material, mixed material is fallen
Enter in double screw extruder, the extruding pelletization under conditions of temperature is 90 DEG C, rotating speed is 100r/min obtains pellet, finally will
Pellet is poured into hot press, hot-forming, the cooling discharging in the case where temperature is 160 DEG C, pressure is 6MPa, you can obtained wear-resisting type rubs
Wipe material.
Example 2
It is 1 in mass ratio：5 are placed in sisal fiber and mass fraction in immersion machine for 20% sodium hydroxide solution mixing,
Immersion treatment 3h at room temperature is obtained impregnating sisal fiber, then maleic anhydride, dimethylbenzene, borax and sodium hydrogensulfite is pressed quality
Than for 2：1：2：1 mixing is placed in the four-hole boiling flask equipped with blender, thermometer and condenser pipe and stirs 11min, after stirring again to
Added in four-hole boiling flask and impregnate sisal fiber, in temperature to be stirred at reflux 2h at 137 DEG C, obtain esterification sisal fiber, spend from
Sub- water washing is esterified sisal fiber 4 times, is finally placed in baking oven, and dry 1.5h, discharging in the case where temperature is 80 DEG C obtain modified sword
Flaxen fiber；It is 4 in mass ratio：1：1 be 15% by formalin and mass fraction that phenol, mass fraction are 10% hydrogen peroxide
Mixing is poured into the four-hole boiling flask equipped with blender, thermometer and condenser pipe, and the back flow reaction 18min in the case where temperature is 55 DEG C is obtained
It to reactant, cools to after 25 DEG C, then the boric acid of reactant quality 2% is added in into the four-hole boiling flask with reactant,
Continue to keep the temperature back flow reaction 2h, decompression dehydration, discharging obtains boric acid modified phenolic resin；CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide are pressed into matter
Amount is than being 1：100 mesh sieves are crossed after 3 mixed grinding 9min, collect sieving mixed-powder, by sieving mixed-powder and silane coupling agent
KH-560 is 3 in mass ratio：1 is mixed 7min, obtains mixture, continues to add in the Portugal of mixture quality 7% into mixture
The dusty yeast of grape sugar and mixture quality 0.4%, is fitted into fermentation tank, is sealed by fermentation 9 days in the case where temperature is 37 DEG C, fermentation ends
Afterwards, tunning is taken out, as modified mixed-powder；It counts in parts by weight, weighs 35 parts of boric acid modified phenolic resin, 18 respectively
The modified sisal fiber of part and 7 parts of modified mixed-powders mixing are placed in mixer, are stirred 25min in the case where temperature is 55 DEG C, then are added
Add 3 parts of potassium peroxydisulfates, 4 parts of rosin and 2 parts of ethylenediamines, continue heat preservation and 40min is mixed, mixed material is obtained, by mixture
Material is poured into double screw extruder, and the extruding pelletization under conditions of temperature is 95 DEG C, rotating speed is 110r/min obtains pellet, most
Pellet is poured into hot press afterwards, hot-forming, the cooling discharging in the case where temperature is 170 DEG C, pressure is 7MPa, you can be made wear-resisting
Type friction material.
Example 3
It is 1 in mass ratio：5 are placed in sisal fiber and mass fraction in immersion machine for 20% sodium hydroxide solution mixing,
Immersion treatment 4h at room temperature is obtained impregnating sisal fiber, then maleic anhydride, dimethylbenzene, borax and sodium hydrogensulfite is pressed quality
Than for 2：1：2：1 mixing is placed in the four-hole boiling flask equipped with blender, thermometer and condenser pipe and stirs 12min, after stirring again to
Added in four-hole boiling flask and impregnate sisal fiber, in temperature to be stirred at reflux 3h at 140 DEG C, obtain esterification sisal fiber, spend from
Sub- water washing is esterified sisal fiber 5 times, is finally placed in baking oven, and dry 2h, discharging in the case where temperature is 85 DEG C obtain modified sisal hemp
Fiber；It is 4 in mass ratio：1：1 mixes the hydrogen peroxide that formalin and mass fraction that phenol, mass fraction are 10% are 15%
Conjunction is poured into the four-hole boiling flask equipped with blender, thermometer and condenser pipe, and the back flow reaction 20min in the case where temperature is 60 DEG C is obtained
Reactant cools to after 26 DEG C, then the boric acid of reactant quality 2% is added in into the four-hole boiling flask with reactant, after
The warm back flow reaction 3h of continuation of insurance, decompression dehydration, discharging obtain boric acid modified phenolic resin；CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide are pressed into quality
Than for 1：100 mesh sieves are crossed after 3 mixed grinding 10min, collect sieving mixed-powder, by sieving mixed-powder and silane coupling agent
KH-560 is 3 in mass ratio：1 is mixed 8min, obtains mixture, continues to add in the Portugal of mixture quality 7% into mixture
The dusty yeast of grape sugar and mixture quality 0.4%, is fitted into fermentation tank, is sealed by fermentation 10 days in the case where temperature is 40 DEG C, fermentation ends
Afterwards, tunning is taken out, as modified mixed-powder；It counts in parts by weight, weighs 40 parts of boric acid modified phenolic resin, 20 respectively
The modified sisal fiber of part and 8 parts of modified mixed-powders mixing are placed in mixer, are stirred 30min in the case where temperature is 65 DEG C, then are added
Add 4 parts of potassium peroxydisulfates, 5 parts of rosin and 3 parts of ethylenediamines, continue heat preservation and 45min is mixed, mixed material is obtained, by mixture
Material is poured into double screw extruder, and the extruding pelletization under conditions of temperature is 100 DEG C, rotating speed is 120r/min obtains pellet, most
Pellet is poured into hot press afterwards, hot-forming, the cooling discharging in the case where temperature is 180 DEG C, pressure is 8MPa, you can be made wear-resisting
Type friction material.
Comparative example
With the wear-resisting type friction material of Nanjing company production as a comparison case to wear-resisting type friction material produced by the present invention and
Wear-resisting type friction material in comparative example carries out performance detection, and testing result is as shown in table 1：
1st, test method：
Abrasive size test is detected using abrasive grain machinery instrument, and abrasive size is bigger, and wear-resisting property is higher；
Wear-resisting revolution test method：According to national standard, by the friction material in example 1~3 and comparative example with 180 mesh sand paper into
Row test, every 500 conversion, one, sand paper, measures last wear-resisting revolution；
Abrasion width test carries out performance detection by the index request of ASTMD2000HK7434；
Hardness test is represented with the hardness of pencil；
Resistance to temperature test carries out performance detection using the method for heatproof experiment.
Table 1
| Test event | Example 1 | Example 2 | Example 3 | Comparative example |
| Abrasive size（Mesh） | 204 | 215 | 225 | 155 |
| Wear-resisting revolution（r） | 7400 | 7450 | 7500 | 6320 |
| Abrasion width（mm） | 0.3 | 0.2 | 0.1 | 0.5 |
| Pencil hardness | 4H | 5H | 5H | 2H |
| Resistance to temperature（℃） | 151 | 155 | 157 | 105 |
The abrasion resistance properties of wear-resisting type friction material produced by the present invention are good according to above-mentioned middle data, and wear-resisting revolution reaches
7500 turns, abrasive size reaches 225 mesh, and heat resistance is good, 157 DEG C of Nai Wenduda, meets the requirement of automobile brake sheet standard, has
Wide application prospect.
Claims (5)
1. a kind of preparation method of wear-resisting type friction material, it is characterised in that specifically preparation process is：
（1）Sisal fiber and sodium hydroxide solution are mixed and are placed in immersion machine, at room temperature immersion treatment, obtains impregnating sisal hemp
Fiber, then maleic anhydride, dimethylbenzene, borax and sodium hydrogensulfite are mixed and are placed in equipped with blender, thermometer and condenser pipe
It is stirred in four-hole boiling flask, adds in immersion sisal fiber after stirring into four-hole boiling flask again and be stirred at reflux, obtain esterification sisal fiber,
Esterification sisal fiber is washed with deionized, is finally placed in baking oven dry, discharging, obtains modified sisal fiber；
（2）Phenol, formalin and hydrogen peroxide are mixed to pour into the four-hole boiling flask equipped with blender, thermometer and condenser pipe and returned
Stream reaction, obtain reactant, after cooling, then into the four-hole boiling flask with reactant add in reactant quality 2% boron
Acid continues to keep the temperature back flow reaction, decompression dehydration, and discharging obtains boric acid modified phenolic resin；
（3）100 mesh sieves will be crossed after CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide mixed grinding, sieving mixed-powder is collected, by the mixed-powder that sieves
It is mixed with silane coupling agent KH-560, obtains mixture, continue to add in the glucose of mixture quality 7% into mixture
It with the dusty yeast of mixture quality 0.4%, is fitted into fermentation tank, is sealed by fermentation, after fermentation, take out tunning, as change
Property mixed-powder；
（4）It counts in parts by weight, weighs 30~40 parts of boric acid modified phenolic resin, 16~20 parts of modified sisal fibers and 6 respectively
~8 parts of modified mixed-powders mixing are placed in mixer and stir, then add 2~4 parts of potassium peroxydisulfates, 3~5 parts of rosin and 1~3 part
Ethylenediamine continues heat preservation and is mixed, obtains mixed material, mixed material is poured into extruding pelletization in double screw extruder, is obtained
To pellet, pellet is finally poured into hot-forming in hot press, cooling discharging, you can wear-resisting type friction material is made.
2. a kind of preparation method of wear-resisting type friction material according to claim 1, it is characterised in that：Step（1）It is described
Sisal fiber and mass fraction be 20% the mass ratio of sodium hydroxide solution be 1：5, the immersion treatment time be 2~4h, horse
The mass ratio for coming acid anhydrides, dimethylbenzene, borax and sodium hydrogensulfite is 2：1：2：1, mixing time is 10~12min, is stirred at reflux
Temperature is 135~140 DEG C, is stirred at reflux the time as 1~3h, and washing times are 3~5 times, and drying temperature is 75~85 DEG C, dry
Time is 1~2h.
3. a kind of preparation method of wear-resisting type friction material according to claim 1, it is characterised in that：Step（2）It is described
Phenol, mass fraction be 10% formalin and mass fraction be 15% the mass ratio of hydrogen peroxide be 4：1：1, reaction temperature
Spend for 50~60 DEG C, the reaction time is 16~20min, and the temperature that cools is 24~26 DEG C, continue reflux time for 1~
3h。
4. a kind of preparation method of wear-resisting type friction material according to claim 1, it is characterised in that：Step（3）It is described
CONCHA MERETRICID SEU CYCLINAE and molybdenum disulfide mass ratio be 1：3, milling time is 8~10min, and sieve mixed-powder and silane coupling agent
The mass ratio of KH-560 is 3：1, the mixing time is 6~8min, and fermentation temperature is 35~40 DEG C, and fermentation time is 8~10
My god.
5. a kind of preparation method of wear-resisting type friction material according to claim 1, it is characterised in that：Step（4）It is described
Whipping temp for 45~65 DEG C, mixing time is 20~30min, and continuations mixing time is 35~45min, prilling temperature 90
~100 DEG C, granulation rotating speed is 100~120r/min, and hot pressing temperature is 160~180 DEG C, and hot pressing pressure is 6~8MPa.
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Application publication date: 20180518 |